class SyntaxTree::YARV::GetConstant

### Summary

‘getconstant` performs a constant lookup and pushes the value of the constant onto the stack. It pops both the class it should look in and whether or not it should look globally as well.

### Usage

~~~ruby Constant ~~~

Attributes

name [R]

Public Class Methods

new (name)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1707
def initialize(name)
  @name = name
end

Public Instance Methods

== (other)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1723
def ==(other)
  other.is_a?(GetConstant) && other.name == name
end

call (vm)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1739
def call(vm)
  const_base, allow_nil = vm.pop(2)

  if const_base
    if const_base.const_defined?(name)
      vm.push(const_base.const_get(name))
      return
    end
  elsif const_base.nil? && allow_nil
    vm.frame.nesting.reverse_each do |clazz|
      if clazz.const_defined?(name)
        vm.push(clazz.const_get(name))
        return
      end
    end
  end

  raise NameError, "uninitialized constant #{name}"
end

deconstruct_keys (_keys)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1719
def deconstruct_keys(_keys)
  { name: name }
end

disasm (fmt)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1711
def disasm(fmt)
  fmt.instruction("getconstant", [fmt.object(name)])
end

length ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1727
def length
  2
end

pops ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1731
def pops
  2
end

pushes ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1735
def pushes
  1
end

to_a (_iseq)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1715
def to_a(_iseq)
  [:getconstant, name]
end